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/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright 2020 Mellanox Technologies, Ltd
 */

#ifndef MLX5_REGEX_H
#define MLX5_REGEX_H

#include <rte_regexdev.h>

#include <infiniband/verbs.h>
#include <infiniband/mlx5dv.h>

#include <mlx5_common.h>

#include "mlx5_rxp.h"

struct mlx5_regex_sq {
	uint16_t log_nb_desc; /* Log 2 number of desc for this object. */
	struct mlx5_devx_obj *obj; /* The SQ DevX object. */
	int64_t dbr_offset; /* Door bell record offset. */
	uint32_t dbr_umem; /* Door bell record umem id. */
	uint8_t *wqe; /* The SQ ring buffer. */
	struct mlx5dv_devx_umem *wqe_umem; /* SQ buffer umem. */
	size_t pi, db_pi;
	size_t ci;
	uint32_t sqn;
	uint32_t *dbr;
};

struct mlx5_regex_cq {
	uint32_t log_nb_desc; /* Log 2 number of desc for this object. */
	struct mlx5_devx_obj *obj; /* The CQ DevX object. */
	int64_t dbr_offset; /* Door bell record offset. */
	uint32_t dbr_umem; /* Door bell record umem id. */
	volatile struct mlx5_cqe *cqe; /* The CQ ring buffer. */
	struct mlx5dv_devx_umem *cqe_umem; /* CQ buffer umem. */
	size_t ci;
	uint32_t *dbr;
};

struct mlx5_regex_qp {
	uint32_t flags; /* QP user flags. */
	uint32_t nb_desc; /* Total number of desc for this qp. */
	struct mlx5_regex_sq *sqs; /* Pointer to sq array. */
	uint16_t nb_obj; /* Number of sq objects. */
	struct mlx5_regex_cq cq; /* CQ struct. */
	uint32_t free_sqs;
	struct mlx5_regex_job *jobs;
	struct ibv_mr *metadata;
	struct ibv_mr *inputs;
	struct ibv_mr *outputs;
	size_t ci, pi;
};

struct mlx5_regex_db {
	void *ptr; /* Pointer to the db memory. */
	uint32_t len; /* The memory len. */
	bool active; /* Active flag. */
	uint8_t db_assigned_to_eng_num;
	/**< To which engine the db is connected. */
	struct mlx5_regex_umem umem;
	/**< The umem struct. */
};

struct mlx5_regex_priv {
	TAILQ_ENTRY(mlx5_regex_priv) next;
	struct ibv_context *ctx; /* Device context. */
	struct rte_pci_device *pci_dev;
	struct rte_regexdev *regexdev; /* Pointer to the RegEx dev. */
	uint16_t nb_queues; /* Number of queues. */
	struct mlx5_regex_qp *qps; /* Pointer to the qp array. */
	uint16_t nb_max_matches; /* Max number of matches. */
	enum mlx5_rxp_program_mode prog_mode;
	struct mlx5_regex_db db[MLX5_RXP_MAX_ENGINES +
				MLX5_RXP_EM_COUNT];
	uint32_t nb_engines; /* Number of RegEx engines. */
	uint32_t eqn; /* EQ number. */
	struct mlx5dv_devx_uar *uar; /* UAR object. */
	struct ibv_pd *pd;
	struct mlx5_dbr_page_list dbrpgs; /* Door-bell pages. */
};

/* mlx5_regex.c */
int mlx5_regex_start(struct rte_regexdev *dev);
int mlx5_regex_stop(struct rte_regexdev *dev);
int mlx5_regex_close(struct rte_regexdev *dev);

/* mlx5_rxp.c */
int mlx5_regex_info_get(struct rte_regexdev *dev,
			struct rte_regexdev_info *info);
int mlx5_regex_configure(struct rte_regexdev *dev,
			 const struct rte_regexdev_config *cfg);
int mlx5_regex_rules_db_import(struct rte_regexdev *dev,
			       const char *rule_db, uint32_t rule_db_len);

/* mlx5_regex_devx.c */
int mlx5_devx_regex_register_write(struct ibv_context *ctx, int engine_id,
				   uint32_t addr, uint32_t data);
int mlx5_devx_regex_register_read(struct ibv_context *ctx, int engine_id,
				  uint32_t addr, uint32_t *data);
int mlx5_devx_regex_database_stop(void *ctx, uint8_t engine);
int mlx5_devx_regex_database_resume(void *ctx, uint8_t engine);
int mlx5_devx_regex_database_program(void *ctx, uint8_t engine,
				     uint32_t umem_id, uint64_t umem_offset);

/* mlx5_regex_control.c */
int mlx5_regex_qp_setup(struct rte_regexdev *dev, uint16_t qp_ind,
			const struct rte_regexdev_qp_conf *cfg);

/* mlx5_regex_fastpath.c */
int mlx5_regexdev_setup_fastpath(struct mlx5_regex_priv *priv, uint32_t qp_id);
uint16_t mlx5_regexdev_enqueue(struct rte_regexdev *dev, uint16_t qp_id,
		       struct rte_regex_ops **ops, uint16_t nb_ops);
uint16_t mlx5_regexdev_dequeue(struct rte_regexdev *dev, uint16_t qp_id,
		       struct rte_regex_ops **ops, uint16_t nb_ops);

#endif /* MLX5_REGEX_H */